package com.example.gradledemo.ui.login;

import androidx.lifecycle.ViewModel;
import androidx.lifecycle.ViewModelProvider;
import androidx.annotation.NonNull;

import com.example.gradledemo.data.LoginDataSource;
import com.example.gradledemo.data.LoginRepository;

/**
 * ViewModel provider factory to instantiate LoginViewModel. Required given LoginViewModel has a non-empty constructor
 */
public class LoginViewModelFactory implements ViewModelProvider.Factory {
  
  @NonNull
  @Override
  @SuppressWarnings("unchecked")
  public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
    if (modelClass.isAssignableFrom(LoginViewModel.class)) {
      return (T) new LoginViewModel(LoginRepository.getInstance(new LoginDataSource()));
    } else {
      throw new IllegalArgumentException("Unknown ViewModel class");
    }
  }
}
